Typewriting machine



I April 1 1926 c.- M. CREWS TYPEWRITING IA HINE Filed May 51. 1924 3Sheets-Sheet 1 April 20,1926. 1,581,102

c. M. CREWS TYPEWRITING MACHINE Filed May 31 1924 3 Sheets-Sheet 2 vmvenfor Affor/re April 20 1926.

c. M. cREws TYPEWRITING momma.

1924 3 Sheets-Sheet 5 Filed May '31 I J I I I I ll 2 Awe/77hr b ig, w

Affame Patented Apr. 20, 1926.

' UNITED STATES PATENT OFFICE.

CLARENCE M; CREWS, OF BROOKLYN, NEW YORK, ASSIGNOR TO UNDERWOOD TYPE-WBITEB COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITING MACHINE.

Application filed May '31,

' .1 To all whom it may concern:

Be it known that I, CLARENCE M. Cnnws, a citizen of the UnitedStates,residing in Brooklyn Borough, in the county of Kings, city and State ofNew York, have invented certain new and useful Improvements inTypewriting Machines, of which. the following is a specification. Thisinvention relates to typewriting of the class known as continuousbilling, in which class of work a multiple ply continuous work-web isinterleaved ordinarily with carbons mounted on a, carbon-carrier that isadvanceable toward the typewriter platen at typing, and retractable upondisplacement of the platen to shift the carbons from a typed work formto a fresh work form on the web, when desired.

It is an object of the present invention to provide a machine for doingthis class of work, in which the displacing of the platen is obviated,and the carbon-carrier is eliminated altogether. It is a further ob jectto provide a machine for this purpose which is economical to manufactureand which is derivable from an ordinary corre spondence typewritingmachine by the addition of-a fsimple attachment thereto.

To this end use is made of discrete carbonsof substantially greaterwidth than the work-web-,-i-.-which are preferably interleavedwitlrthe'workweb, in such manner that both side-hiargins-pf the carbonspro trude beyond the'si des of thework-web. These unattached carbons arefed forward and backward around the platen, with the work-web,byfime'ansxoffthe usual feed-rolls running on the platen. .When it is.desired to shift the carbonsfrom atyped secti 'n of the web to. anuntyped section thereo the work-web'and carbons are/first fed togetherto position the carbons clear of'the platen where they may bestraightened. The discrete carbons are then clamped independently of thework-web, by their protruding margins at or near their edges remotefrom.

I the'platen, and held stationary. in this car fed relatively to themuntil thefdesired 131a tiveshift-has been accomplished. The ca.r'-' bonclamps are then ,-.released," and :the'ca bons are inafter appear. 4 3In the accompanying drabon-shifting position while the work-web is 1924.Serial No. 717,009.

correct amount of relative shift may be determined by observation of thecarbons and the work-web. It is also desired to utilize the platen todraw the work-web between the clamped carbons. The work-web therefore,is not led into the rear of the machine from the source of supply, asusual, but is led to the platen, bottom end first, over a highpaper-table at the front thereof, so that it may be caused to pass fromfront to rear when shifted relatively to the carbons. The work-web isthus caused to progress through the machine from front to rear byrelative shifting and the carbonsare caused to progress from the bottomtoward the top of the web between the writing of successive bills.

Provision is made at the delivery side of the platen, that is to say, atthe rear of'the platen in this machine, of means for severing the typeWeb-sections. Since the severing of the web at the rear of the platen bya tearingofi knife ofthe usual construction would be awkward; because ofthe'obstruction formed by the front paper-table, novel web-severingmeans are rovided. Such web-severing means includes a chopping knife,mounted upon a co-operating shearingblock adjustable toward and from theplaten to accord with different lengths of ing and supporting meanswhenthe knife is operated to cho off a web-sec? sectioma handle isprovide which is operwhich is connected through a suitable cam,

ms able in the plane of the rear paper-table and i to movethechoppingblade transversely of I "said'table when so operated.

A, Other features and advantages 7 will I here- Figure 1 is afrontelevatioiifof a typeg writing machine having the presentimprovements applied thereto, an intermediate portionof the machinebeing cut away; .c iew artly in section of the upper endof the rent jpaper-table, showing the clamps applied to; the anal-gins of thecarbon-sheets to hold.

Figure 2 is a fragn'xentary detail themf stationary for relativework-web and carbon shifting.

side guides for t line 55 of Figure Figure dis a transverse verticalsection 'on' the line 66 of Figure 5, showing the arrangpment of theknife and. the. shearing bloc showing the web-severing means.

Figure 8'-is a front elevation similar to Figure 1, but on a smallerscale, of a form of the invention designed for use with a fanfoldwork-web;

Figure 9 is a side elevation,partly in section, of the mechanism shownin Figure 8.

Figure 10 is a sectionalview, taken on the line 10-10 of Figure 4,looking in the direction of the arrows.

Figure 11 is a sectional view on the line 11-11 of Figure 8, looking inthe direction of the arrows.

The typewriting machine comprises a cylindrical platen 10 journaled byits axle 11 in a platen-frame 12, which is mounted to.

travel in letter feed and return directions in the usual manner. Fcod-rolls 13 co-op: eratewith the platen 10 tofeed the wor web 14 andinterleaved carbons 15 in line- Space and reverse directions around theplaten.

'As has been stated, the plies of the workweb 14 are interleaved withcarbons 15 of substantiall greater width than themselves, the carbonsbeing preferably arranged to have their side margins protrude beyondboth side edges of the work-web. (See Figure-1.) The work-web 14 is ledinto the machine, bottom end first, over a highskeletonized paper-table16 at the front of the platen, which is supported by means :of brackets17-on the ends 18 ofthepla'ten frame 12. Side guideslgon the frontpaper-.table16 "may co-operate with theside edgesofthecarbons 15 tokeepthe carbons true and in register, and side-edge 0r gages 20secured'to the paper-ita 1e 16 near its upper endby set; screws 21assist in controlling the work-webflei 'inthemacliine. These side-edgegages 20 are adjustable: late; erally of the front aper table lfi along"aslot22 that extends i table. a j

In startingthe work, the carbons v15 are properly interleaved with thesecond form- Figure 7 is .a sectional front elevation ides" in turn. Itwillbe noticed-t rom side to side of the section from the'lowerend ofthe web, which end of the webis then; introduced downwardly at the frontof the platen and drawn backwardly to first writing-line'position by theaid of a separate sheet inserted temporarily into the machine from therear to form a front-insertion guide; The typin' of said secondform-section is then effected, the web 14 and carbons 15 being line-fedtogether by the. laten 10 and co-operating feed-rollsl3 while this is injprogress.

At the conclusion of typing said formsection, the platen is rotated byone of the platen-turning knobs- 23 to advance the work-web-14 andcarbons 15 together until the carbons occupy a position on the frontpaper-table 16 where they are straight and entirely free of the platen,as shown in Figure 4. The carbons 15 are then clamped stationary attheir upper corners by clamps 24 which are fast on a rod 25 and whichare located beyond the bounds of the work-web 14. The rod 25 is providedwith an operat-,

ing handle 26 for the clamps 24,.which may be detained in position; tomaintain the clamps either effective or ineffective by afdouble-actingspring 27 connected to the handle 26 and to the paper-table 16 to crossthe axis of the rod 25 in the movements of the .handle between thefull-line clamping position and the dot-and dash non-clamping positionof Figure 2.

After the clamps 24 have been applied to hold the carbons 15 stationary,the platen is rotated backwardly by one of the platenturning knobs 23 toshift thework-web, 14 relatively to the carbons 15 a'distance of oneform length. Each carbon may have a strip .of paper 28 pasted along itsupper margin to reinforce said'margin and guard it against injury by thework-web at the shifting operation'.

At the completion of the relative shifting,

the line of division-between the typed websection andthe end section onthe web, which received no typing, is in register with gay choppingknife 29 mounted behind the platen. This knife 29 and its -operating 1means, will be described in detail presently. The end section ofvthe webis next severed b wardly by one; of the platen-turning knobs 23 to feedthe carbons andthe freshwebsection with; which they have becomeinterleaved as a result of therelative shifting, down to first---writing-line position. The cycle of operations is thus completed and.willbe repeated with reference to the fresh web-section and thesucceedin web-sections at each websection, when tylped,-,is permittedto. remain on the: web unti been typed and the succeeding section hasthe carbons have been stripped therefrom.

115 I the knife and the clamps 2'4 arerelease whereupon the platen is.again rotated'back cam 34 has a cam path 35 in which a pro jection 36on'the chhpping knife 29 rides. The arrangement is such that a handle 37on the cam may be actuated by movement in the plane of the rearpaper-table 32 to move the chopping knife, 29 transversely thereof toshear the work-web 14. This operating means for the knife, guards theknife supports and thecarriage guides and supports against injury whichwould result if the chopping knife were arranged to be actuated by ablow in a direction transverse to the rear paper-table. The knife,as'showmwrll engage the webs and sever them across their entire widthsubstantially instantaneously.

It will be appreciated, however, that by a.v

slight alteration of the design a scissorslike operation could beobtained. The knife is held toward the shearing block by a spring 39interposed between the knife 29 and an adjustable nut 40 on thepivot-pin 41 of the knife. The adjustable nut 40 may be locked topreserve the desired degree of stress upon the spring by means of alock-nut.

At the time when the carbons 15 are moved from their Figure 4 positiondown to writing position, the lower edges of their protruding marginsmight catch upon .the forward edge of the usual paper-apron 42 ifprovision were not made to guardagain'st this. Fingers 43 areaccordingly provided to extend down from the sides of the frontpaper-table to points between the aperapron 42 and the platen 10. Thesengers 43 guide the carbons 15 beneath the paperapron and guard them frommutilation by the paper-apron.

In Figures 8 and 9,'there is shown another form of the inventionparticularly ada ted for work with a fan-fold web. This orm is generallysimilar 'to the form previously described. 'Eachcarbon- '44, however, isof necessity terminated within a fold "of the fan-fold web at one side,and each, therefore, has only one protruding margin whereby it may beclamped. The carbons 44 are stiffened somewhat by strips of paper 45pasted to their backs along their upper margins and along theirprotruding side margins to assist in preventing displace ment of thecarbons at shifting. Clamps 46 are arranged to extend alongsubstantially the entire length of the carbon-sheets 4 and arecontrolled in their movement, in such manner, that they are alwaysparallel to the front paper-table 16. The clamps 46 are mounted at theirlower and upper ends respectively on parallel links 47 and 48 of equallength, fast on shafts 49 and 50, which shafts have parallel operatingarms 51 and 52 of equal length connected by a link The right-hand arm 52on the upper shaft is extended beyond its connection with the link 53and provided with a handle 54 whereby the clamp may be moved between itseffective and ineffective positions. A doubleacting' spring 56 controlsthe clamps 46 to maintain them either effective or ineffective asdesired. The operation of this form of the invention is the same as thatof the form previously described.

In either form of the invention the protruding-side margins of thecarbons may be secured to each other if desired.

It isa point that the knife supporting brackets 31 and the frontpaper-table brackets 17 extend from common bases 57 and that both aresecured to the machine simultaneously by the turning home of screws 58and 59 to fasten said bases to the ends 18 ofthe platen frame. All ofthe novel mechan srn, therefore, is combined in a unitary attachmentwhich can be quickly applied to convert a standard machine into acontinuous billcr.

The elimination of the carbon-carrier besides saving the cost of thismember and operating mechanism therefor, makes unnecessary the provisionof along track for the carbon-carrier, and this, in turn, obviates theneed of a frame extension and additional guides to support the track.

Variations maybe resorted to within the scope of the invention, andportions'of the improvements may be used without others.

Having thus described my invention, I claim: .1

1. In a continuous billing typewriting machine for use with a set ofcarbons, the combination with a cylindrical platen, of a frontpaper-table over whicha work-web may be guided from a source of supplydownward to the platen at the front thereof, the paper-tablc beinglonger than the carbons, means at the upper end of the papertable forclamping the carbons stationary While the work-web is fed backward bythe laten to effect a relative shifting of the W01 -web and carbons, andmeans atthe rear of the platen to sever the work-web.

2. In a continuous billing typewriting machine for use with a set ofcarbons, the combination with a cylindrical platen, of a paper-tableover wlnch a work-web may be guided from a source of supply to theplaten, the paper-table bein longer than the carbons, means at the en ofthe paperbons, to guide the work-web between the carbon-clamping meansso that it will not located above the fore above the range of travel ofthe car-- eing longer than the, car I theupper end'of the paper-tablefor clam li-f means for clamping the side margins of thecarbons,,but-'not-the work-web, to detain the carbons stationary in acarbon-shifting posi-' ftion-fjat the-front ofthe platen while the itclear of the carbon-clamping means to" machine for use with a setcombination with a .cylindrical platen, of

be clamped with the carbons.

3. In a continuous billing typewriting machine for usewith a set ofcarbons, the combination with a cylindrical platen, of a frontpaper-table over which a work-web narrower than the carbons may beguided from a source of supply downward'tothe laten at the frontthereof, the paper-table bons, .means at ing, the carbons stationarywhilethefwor we is fed backward by the platen to efi'ect a relativeshiftingof the work-web'and. car+ bons, side guides for the work web toguide avoid being clamped thereby, and means for adjusting the web-sideguides-r laterally of the paper-table, the web-side guides beingclamping means and there-' of the carbons, however adjusted.

4. In a continuous billing typewriting machine for use with a set ofcarbons, the combination with a cylindrical platen, of a frontpaper-table over which a; work-web narrower than the carbons maybeguided from a source of Sn ply downward to the platen at the front tereof, the paper-table being longer than the carbons, clamps at theupper end of the paper-table for clamping the sidemargins of thecarbons,'bnt not the work-web, to hold'the carbons stationary while. thework-web is fed backward by the platento effect a relative shifting ofthe work-web and carbons, means common to said clamps for operatingthem, and means to detain the clamps in effective or ineffectivecondition. 5. In a continuous billing typewriting machine for use with aset of carbons, the combination with a cylindrical )laten, of apaper-table over Wl'llOll a worlr-web narrower than the carbons maybeguided from a source of supply to the platen, table being lon er thanthe carbons, means at the end of t e paper-table remote from the platenforclamping the side margins of the carbons, but not the work-web, :tohold the carbons stationary while the workweb is fed to effect arelative shifting of the work-web and carbons, and. means to sever thework-web. I a

6. In a continuous billing typewriting of carbons, the

bons where they cannot'obstruct the travel platen,

a pair of.

the paperthe paperstationary while tending across the paper-table onwhich the clamps are fast, a handle for rocking the rod to move theclamps between effective and ineffective positions, and a double-act-ispring connected to the handle to hold the. clamps in either of saidpositions.

7. In a continuous billing typewriting machine for use with a set ofcarbons, the

combination with a, cylindrical platen, of

floik-webfis fed in the machine to accoma relative shifting betweentheworkweb and the carbons following the typing of a form-section, apaper-apron adjacent the and front-insertion guide-fingers overlying theside margins of the carbons and extending down between the paperapronand the platen to prevent snagging of the lower edges of said sidemargins of the carbons upon the paper-apron when the carbons are fedfrom carbon-shifting position down to writing position.

8. In a continuous billing typewritingm'achine for use with a set ofcarbons, the combination with a cylindrical platen, of means foreffecting a relative shifting of the carbons and an interleavedwork-web,and web-severing means comprising a shearing bloplk and a pivoted knifeto cooperate therewit 9. In a continuous billing chine for use withcombination with a 7 means for effecting a relative shifting of thecarbons and an interleaved work-web, a table'for guiding the work-webaway from the platen at the delivery side thereof, a chopping knifemovable transversely of the table to sever the web, and operating meansfor the knife comprising a handle movable substantially parallel to thetable.

10. In a typewriting machine, the com bination with a cylindrical laten,of, means for conducting a work-web to the platen from the frontthereof, and rear of the platen to sever the web.

11. In a continuous billing typewriting machine, the combination with acylindrical platen, of bracketsextending outward from the platen at thedelivery side thereon-a shearing block adjustablealongthd bracketstoward and from the platen,

typewritin" ma- :1 set of carbons the cylindrical platen, of

a knife atthc and -a' chopping knife mounted upon the shearing block forco-gperation therewith to sever the workwe 1 12. In a continuous billingtypewriting machine, the combination with a cylindrical platen, ofbrackets extending outward from the platen at the delivery side thereof,a shearing block 'adjustable along the brackets toward and from theplaten, a chopping knife mounted on the shearing block for movementtransversely of the plane of the brackets to sever a work-web, a handlepivoted on the shearing block for movement substantially parallel-to theplane of the brackets, and operating connections from the handle to thechopping knife.

13. The combination with a standard correspondence typewriting machine,of a unitary attachment to convert said machine for continuous billing,consisting of a'pair of base-members attached to the ends of theplaten-frame of the machine, two pairs of rackets on'the base-members,means suported at the introductory side of the platen y one of the pairsof brackets to support a set of carbons in a straight condition-free ofthe platen and hold them stationary while aninterleaved work-web isshifted relatively to them, and web-severing means supported at thedelivery side of the platen by the other pair of brackets.

14. In a continuous billing typewriting machine for typing upon amultiple ply fanfold work-web, by means of a set of carbons wider thanthe work-web, the, combination with a cylindrical platen, of means forguiding the work-web and carbons so that each carbon will protrude atone of its side margins,

beyond the side of the work-web, and means for clamping the carbons bytheir protruding margins throughout substantially the entire lengththereof tohold the carbons stationary during shifting of the work-web,relatively to them, and to prevent skewing the carbons during suchrelative shifting.

15; In a continuous billing typewriting machine for t ping upon amultiple ply fanfold work-we by means of a set of carbons ing thework-web and carbonsso that each carbon will protrude at one of its sidemargins beyond the side of the work-web, means for clamping the carbonsby their protruding side margins, and a re-enforcing and stifl'eningstrip on the side margin of each carbon to co-operate with thecarbon-side-guiding means and with the clamping meansto prevent skewingof the carbons when the workwcb is shifted relatively to them.

16. In a continuous billing typewriting machine for typing upon amultiple ply fanfold work-web, by means of a set of carbons wider thanthe work-web, the combination with a cylindrical platen, of means forguiding the Work-web and the carbons so that each carbon will protrudeat one of its side margins beyond the side of the work-web, apaper-table to support the work-web and carbons in carbon-shiftingposition, and means to hold the carbons by their protruding side marginsthroughout substantially the entire length thereof comprising a pair ofclamps to overlie sai side margins, and

means common to the clamps, constructed to move them toward and from thepapertable simultaneously, While maintaining them always parallel to thepaper-table 17. In a continuous billing typewritmg machine foruse with aset of carbons, the combination with acylindrical platen, of acarbon-shifting table, means for guiding the carbons and interleavedwork-web to cause a side margin of each carbon to rotrude beyond theside of the work-we a clamp to clamp the protruding side margin's ofsaid carbons in carbon-shifting osition while thework-Web is shiftedrelatlvely to the carbons, the cl p extending for a substantial distance,n the direction of the length of the carbons, and operating means foithe clamp to move it between eifective ineffective positions, andconstructed to maintain the clamp alwaysparallel to I table.

ENCE M. CREWS.

the carbon-shirktjin

